1. University of Pennsylvania, Ms. Coll. 390 Item 958 DS ID: DS8099 Title: Philosophical text Author: Śaṅkarānanda Date: circa 1700-1850.
2. University of Pennsylvania, Ms. Coll. 390 Item 1136 DS ID: DS8249 Title: Philosophical text Author: Ādi Shankara Date: circa 1700-1850.